The Dark Knight is rising again, but who's Batman's daddy?

MMGN: If you find out you're having a kid, provided you've been dying to have a kid, then you don't care when it's coming out (of a human female, not a game studio), although to be fair, you MIGHT care who the father is. And at this stage, if you care to buy into the rumour mill, it might not be Rocksteady.
(PS3, Rocksteady, Xbox 360)